Theodore f



(No Model.) T. F. OONKLIN.

BRIDGE GATE.

No. 492,387. Patented Peb. 28, 1893.

UNITED STATES PATENT FFICE.

THEODORE F. CONKLIN, OF CHICAGO, ILLINOIS, ASSIGNOR TO NATHAN LEPPERR,OF SAME PLACE.

BRIDGE-GATE.

SPECIFICATION forming part of Letters Patent No. 492,387, dated February28,1893.

Application filed August 29, 1892.

To all whom it may concern:

Be it known that I, THEODORE F. CONKLIN, of Chicago, in the county ofCook and State of Illinois, have invented certain new and usefulImprovements in Mechanism for Operating Bridge-Gates, of which I dodeclare the following to be a full, clear, and exact description,reference being had to the accompanying drawings, forming part of thisspecification.

My present invention has for its object to provide improved mechanismfor operating bridge gates and my invention consists in the novelfeatures of construction hereinafter described and illustrated in theaccompanying drawings and particularly defined in the claim at the endof this specification.

In the accompanying drawings my improved mechanism is shown as appliedfor operating the gates of a swinging bridge.

Figure 1 is a perspective view showing the abutment of a swingingbridge, having my improved mechanism applied thereto. Fig. 2 is a detailplan view, showing the bridge partly turned. Fig. 3 is a similar view toFig. 2, but showing the bridge in closed position. A designates aswinging bridge and B designates one of its abutments, it beingunderstood that both of the abutments or approaches of the bridge may beprovided with the same gate mechanism.

In the accompanying drawings I have shown my improved mechanism asemployed for operating a gate consisting of two guard. bars C and C thatare pivotally mounted as at 0 upon the upright posts 0 at each side ofthe abutment. The free ends of these guard bars are preferably furnishedwith the usual stop rods 0 which serve to limit the downward movement ofthe bars.

Adjacent to the edge of the abutment B are mounted the operating leversD and D, these levers being pivoted as at cl; and the outer ends of thelevers D and D are connected preferably by chains e to the outer ends ofthe pivoted guard bars 0 and C. Preferably the chains e will pass aroundthe idler rolls g. The outer ends of the levers D and D may be furnishedwith a series of holes (1 into which the books of the chains c may beSerial No. 444,345- (No model.)

to its end, and by preference also the inner ends of the levers D and Dwill be suitably connected together, as per example by a pin 0" fixed toone of the levers and projecting through a slot 1" in the oppositelever.

From the foregoing description it will be seen that when the gate is inclosed position the friction roll ct will occupy a position opposite theinner ends of the levers D .and D and will consequently hold the pivotedguard bars C and C in elevated position, as shown in Fig. lot thedrawings, and it will be observed that when in such position the guardbars C and C will be in readiness to fall by gravity as soon as theswinging bridge is so far turned as to cause the friction roll a to pass0E from the inclined ends of the levers D and D. When the swingingbridge is thus turned in either direction the guard bars C and C willfall by gravity to the closed position shown in Fig. 1 of the drawingsand will remain in such position until the swinging bridge is againclosed and the friction roll a has forced inward the inclined ends ofthe operating levers D and D.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is as follows:

l'he combination with the pivoted guard bars C and C of the pivoted andhorizontally movable levers D and D, the inner ends of said levers beingconnected together and extending outwardly in position to be operated bythe swinging bridge, and forming a double incline, and connectionsuniting the outer ends of said levers to the ends of the pivoted guardbars C and C, substantially as described.

THEODORE F. CONKLIN.

Witnesses:

GEO. P. FISHER, J r., FRED GERLAOH.

